Position: How Tos - Partition Management - Fixed – "A disk read error occurred Press Ctrl + alternative text + Del lớn restart"

This article explains causes and solutions to lớn fix "A disk read error occurred Press Ctrl + alternative text + Del to restart" error occurred on Windows XP, vista, 7, 8 and 10. Hard drive failure can cause serious problem, such as system crash, data loss, etc. If your computer gives this error, you should be very cautious and handle it as soon as possible. In this guide, you can find multiple approaches khổng lồ troubleshoot this disk read error và rescue data from damaged hard drive. The following contents contains liên kết for topics in this page, you can click these links to read related nội dung directly.

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Fix "A disk read error occurred" on Windows

Description & symptoms of read disk error

A disk read error occurred is a common error that we can encounter. This error means Windows detects a hard disk problem or there is something wrong with the process of reading hard disk. This error appears while computer boots up và blocks computer to boot into operating system, directly preventing user out of system. It appears with message "A disk read error occurred Press Ctrl + alternative text + Del to restart" as picture below. When you press Ctrl + alt + Del lớn restart computer you still get same error without being able khổng lồ boot up Windows.

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Here is one of such questions related khổng lồ disk read error from customers:

"Hey All! I did a system update for my computer. The download and installing process went well, but when I restarted computer I got an error on the black screen saying "A disk read error occurred Press Ctrl + alt + Del to restart". I restarted computer for several times and all ended up with this prompt. I have used this máy vi tính for nearly 5 years & never had a disk read issue. I can"t vì anything with it, as I can"t access Windows 7. Is there something wrong with the hard disk or system update? Is it possible lớn fix it if I reinstall Windows using installation CD? vì chưng you have better solutions on this issue?"

Why does disk read error occur?

The actual cause of this error varies from computer to lớn the other, as it ranges from hardware issue to lớn software problem. This section makes a summing up of the most common reasons behind the disk read error.

Computer hard drive fails

In most cases, the read disk error indicates hard drive damage. When boot sector on hard drive is damaged or system partition gets bad sectors, then system booting will be stuck with errors.

No bootable hard disk

Sometimes, the disk read error occurred before system booting is the result that computer read wrong bootable hard disk. If there is no bootable hard disk or the bootable is not properly configured, system won"t be able to boot normally.

Hard drive cables damage

The IDE cable is the wide piece of wrings in your computer case và it is responsible for connecting hard drive and motherboard. Occasionally, incorrect or loose IDE cables can lead khổng lồ read or write errors on hard drives.

BIOS setting issue

In rare cause, disk read error caused by improper BIOS settings. When BIOS updates are available, you should update it carefully.

MBR is corrupted

Incorrect or invalid Master Boot Record setting is another common cause. Furthermore, corrupted MBR configuration can be caused by vi khuẩn attack, power outage, bad sectors, etc. Besides, misconfigured partition table might bring about this issue.

Sudden nguồn failure

Improperly shutting down system is likely lớn corrupt files và hard disk on your computer. This typically happens if nguồn is cut accidentally or system is forced khổng lồ shut down in order lớn kill an unresponsive program. After computer crashes, Windows will ran a kiểm tra for file system và disk while booting with the purpose of verifying & repairing problematic files.

Operating system issue

The incomplete or improper installation of Windows also gives rise khổng lồ this issue, such as system is lacking of dll files or some system registry files are damaged.

Fix "A disk read error occurred" on Windows

Since reasons behind this error are varied, there is no phối solution to fix this issue. We provide a couple of different solutions so that you can try out to lớn fix this problem on your own.

Solution 1: test RAM memory

This is seldom regarded as a solution lớn fix the disk read error issue, but it works in some situations. Because a faulty RAM slot or RAM slot may result in the problem. It sounds odd that testing RAM has something to bởi with hard disk read error, but memory problem indeed brings about various issues. Since the RAM memory kiểm tra is easy & non-destructive, you may as well perform a complete test for RAM memory. The entire kiểm tra process is safe và doesn"t damage hard disk or data, you can try this first.


If you added new RAM memory lớn computer in recent days, you can try khổng lồ remove it & leave only one RAM. Then restart computer và to view whether the issue is eliminated.

Also, you can move the single RAM module to lớn the other slot to check whether RAM slot is damaged. To do so, you can leave one RAM module on one slot và restart computer. If disk read error still occurs, move the RAM khổng lồ the other slot and start computer again.

Additionally, you can use third các buổi tiệc nhỏ tool khổng lồ run the test. Burn the tool to lớn your bootable CD or USB drive, & then it can diagnose RAM after computer is booted khổng lồ CD or USB disk.

Solution 2: kiểm tra / replace hard drive cables

Hard disk cable might be broken, leading lớn system can"t read disk correctly. To lớn rule out this possibility, you can vì this: try a new or different port for IDE or SATA cable. If there is more than one hard drive connected khổng lồ computer, you should unplug all disks except the one from which operating system boots. Then you can kiểm tra whether the cable or post is damaged. If you get the disk read issue after a new disk is installed, you need to make sure the disk is on the master connector if possible and set the disk jumper lớn master. If cables on your computer are damaged, you should replace them with new ones.

Another way to check hard drive cables is moving the affected hard drive to lớn another working computer. If hard drive works well on that computer, you can superficially make a preliminary judgment on cables as well as the hard drive"s health condition. If that computer can boot into Windows without prompting "A disk read error occurred Press Ctrl + alternative text + Del lớn restart", the problem lies in your computer instead of the hard disk.

Solution 3: Reset or tăng cấp BIOS

Installing an incorrect or incomplete version may trigger serious issue, thus you should nâng cấp BIOS very carefully. Plus, restoring BIOS to default setting or upgrading can fix this issue in some circumstances. How to vày that?

Reset BIOS

Step 1Restart computer and press the key which enters BIOS setup. The key might be F2, F10, Del, etc. Varying from computer lớn computer. Just look carefully at the screen while computer starts.

Step 2Use arrow keys to switch thực đơn options & locate the option to reset BIOS. The name to revert BOIS to mặc định settings is not the same on different computers, which can be Load Fail-Safe Defaults, Apply Default, Load BIOS Defaults, Load mặc định Settings, Load setup Default, Factory settings, etc.

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Step 3Save changes, exit BIOS and restart computer.

Upgrade BIOS

Go khổng lồ the website of your computer"s manufacturer và find the tải về center where you can download the latest BIOS version. Please lưu ý that you should select BIOS version based on your operating system, version, system board model, etc. Usually, the BIOS download comes in a compressed tệp tin such as .zip file. When you extract data from it, you can see a README tệp tin which will guide you through the upgrading.

Solution 4: Rebuild MBR (Master Boot Record)

table for the disk, disk signature as well as executable code called master boot code. When computer boots, BIOS codes identifies startup disk và reads MBR. If MBR is damaged or corrupted, you will not be able to boot system or even đại bại partitions. How lớn rebuild MBR? Here we can use binhchanhhcm.edu.vn không tính phí to rebuild MBR. binhchanhhcm.edu.vn is a không tính tiền partition manager designed to lớn manage disk & partitions and recover lost files & partitions. It provides miễn phí features lớn rebuild MBR, repair partition table, resize partition, edit hex data, etc. Let"s see the steps to lớn rebuild master boot record.

Since the affected computer can"t boot to lớn Windows, you need to boot computer with bootable disk.

Step 1Create a bootable disk for binhchanhhcm.edu.vn. Run binhchanhhcm.edu.vn on another normal computer & insert a USB flash drive lớn that PC. Select the flash drive và click "Tool" menu to choose "Create WinPE Bootable USB Drive of binhchanhhcm.edu.vn". Click "OK" khổng lồ confirm the operation.


Step 2Insert the bootable disk to lớn the computer that reports disk read error and power on PC.

Step 3Press the key that can enter BIOS immediately where you can phối the bootable disk as the first boot. Save changes and restart computer.

Step 4Now computer will boot from the USB disk và enter binhchanhhcm.edu.vn Dos version by itself.

Step 5Select the hard drive from which you want to boot computer và click "Disk" from menu khổng lồ choose "Rebuild Master Boot Record". Click Yes on the popped-up message box.


Solution 5: Verify and repair bad sectors

Bad sectors are sectors on storage devices that are physically or logically damaged và cannot be read or written by operating system. You can test hard drive by viewing S.M.A.R.T. Information or checking bad sectors with disk tools. If computer can"t boot lớn Windows, you can boot computer with bootable disk. In that case, please create binhchanhhcm.edu.vn Bootable disk following step 1~4 in Solution 4. Alternatively, if you have other bootable disk, you can copy the installation thư mục of binhchanhhcm.edu.vn lớn the bootable disk.

Step 1Launch binhchanhhcm.edu.vn và select the disk that says disk read error, and then click "Disk" lớn choose "Verify or Repair Bad Sectors", as follows:

Step 2Click "Start Verify" button on the "Bad track verification" window & binhchanhhcm.edu.vn starts scanning bad sectors. As shown in the screenshot below, red blocks are damaged, representing bad sectors. Time taken by the verifying process depends on the capacity of select hard drive, please wait patiently.


Step 3If the hard drive contains bad sectors, you should back up important files lớn another disk & try repairing bad sectors with binhchanhhcm.edu.vn.

How lớn rescue data while disk reads error?

Hard disk read error should be attached great importance, for it not only prevents system from booting, but also sometimes gives rise to data loss. As mentioned in previous part, corrupted MBR may lead khổng lồ partition và data loss; bad sectors can change partition into inaccessible. Can you recover lost data while partition cannot be opened or hard drive is empty & contains no partition? This section is going to introduce an easy method to recover files from corrupted and inaccessible partition.

Step 1Run binhchanhhcm.edu.vn and locate the partition that needs recovering data. The click "File Recovery" button from the tool bar to xuất hiện file recovery window.

Step 2Select "Complete Recovery" option và click "Start" button. Khổng lồ recover deleted files, you should select "Recover Deleted Files Only". Tệp tin scanning might long of the partition being scanned is of large capacity. You can preview files during scanning when files are displayed.


Step 3Preview recoverable files. You can preview file"s original content by double clicking it. File preview can help judge whether files can be recovered correctly và successfully, because it identifies whether tệp tin has been damaged.

Step 4Recover files. Select & right click files you want to lớn recover and choose "Copy to". Then you can choose a location lớn save recovered files.


This article has listed 5 solutions khổng lồ this disk read errors và there might be other approaches on tài khoản that causes are various. If you have other solutions, you are warmly invited to tương tác us and share your solutions with readers. Additionally, khổng lồ protect system or data from damage, you should size the habit of backing up in regular.